Sorry. We were caught by surprise. We only managed to bring up a "Thanks" message yesterday. We got a single screenshot online for now as a start.
We will try to put more info / screenshots on the website now/the next days.

The best HTML5 game was Big Island, written in Dart and playable directly from Github

Oh? How? The Big Island page has a non-clickable link (!) to the repository page, which you then have to scroll down to the bottom of . There, there are three options, and I presume the "Easy way" is meant to be the directly playable one, since there's nothing else to download according to the instructions. Click on it, however, and all I get is a black page. Does it require Chrome?

The playable link goes to opengameart, where you have to go to github, then find the right link on the bottom. Come on mods, actually EDIT the submissions for correctness. That at least is not censorship and does not go against any libertarian leanings.

In the intro, there are NPCs wandering. At one point the into flew over a bridge. NPCs on the ground were blocked by the water. Two NPC's on the bridge walked right off and walked on the water.
It may not be a bug though. The game may have two Jesuses!

Our server is a rather weak vserver designed for testing only. We also know some bugs that are already fixed. But since we run the server on the old judging status those are not fixed yet. So our server goes down rather easily at the moment. We prepare for an update now. The judging end caught us by surprise a bit so we are unprepared. We are working on resolving this issues now!